Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240508-en
  • resource tags

    arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
  • submitted
    22-05-2024 18:40

General

  • Target

    documentos.xlam

  • Size

    14KB

  • MD5

    e889497aae5825f3ae149a28c30a143f

  • SHA1

    14df2a6bf9aab41ac3fbb4879dabea7f2722af1b

  • SHA256

    e5ad7596e5fc883fa78c1644afe8337bc65c1ce3bded087a2cf923b99af40e76

  • SHA512

    3e61ad9f68398d6c89dff4975344ac26eba2c248df6693d9dba694601ac27a29f8ebb24d9e0abff9eb1d237489a1aacfe964a09480a9a8f1b94b7072a8683423

  • SSDEEP

    384:+4BJXIZwOjvsjAp6RuBrrj/9MY9Vga6uavY3H:9B5IDx6Ryj/9VXga/3

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.midhcodistribuciones.com
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    ,A7}+JV4KExQ

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Blocklisted process makes network request 7 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • AutoIT Executable 1 IoCs

    AutoIT scripts compiled to PE executables.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\documentos.xlam
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:2756
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:2704
    • C:\Users\Admin\AppData\Local\Temp\ztedsQswghs.exe
      "C:\Users\Admin\AppData\Local\Temp\ztedsQswghs.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2176
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
        "C:\Users\Admin\AppData\Local\Temp\ztedsQswghs.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2944

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    0005d4bd674eebfdda77e07ccde958c3

    SHA1

    c24b613db7d6de326a8e4c5ba7adc458e2ac8e22

    SHA256

    85842b585b8a8b5e02ce47e13723a7f5c2094328ebcf278fd9be270ccb9f19b8

    SHA512

    5a1eb10d5d0b0b9568766ee66ceabad1a49084fca5e54024b1a84a95298112dded03988e27a8add56babb98545929908629793f60747c878131a096b1a388fd6

  • C:\Users\Admin\AppData\Local\Temp\Cab2D2A.tmp
    Filesize

    68KB

    MD5

    29f65ba8e88c063813cc50a4ea544e93

    SHA1

    05a7040d5c127e68c25d81cc51271ffb8bef3568

    SHA256

    1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184

    SHA512

    e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa

  • C:\Users\Admin\AppData\Local\Temp\Tar2DAA.tmp
    Filesize

    177KB

    MD5

    435a9ac180383f9fa094131b173a2f7b

    SHA1

    76944ea657a9db94f9a4bef38f88c46ed4166983

    SHA256

    67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34

    SHA512

    1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a

  • \Users\Admin\AppData\Local\Temp\ztedsQswghs.exe
    Filesize

    1019KB

    MD5

    ca82319fef771a184d1f98750e5bbb21

    SHA1

    11893474d3fd90f57cde4f16bfc153b4448d1363

    SHA256

    8c8f6c263d24354338e5d2d50d671a6e529d902be66962dab85932a326477e75

    SHA512

    f84517ddb447def1f621a468e442cf5ffd4fdff90a2df35f88df059bfddbd0d4cf336e94b8af5e2cd2ce79cc6c372e20171931deb3af5fdf15f3092e3b7dcd3c

  • memory/2756-115-0x00000000725FD000-0x0000000072608000-memory.dmp
    Filesize

    44KB

  • memory/2756-1-0x00000000725FD000-0x0000000072608000-memory.dmp
    Filesize

    44KB

  • memory/2756-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2756-118-0x00000000725FD000-0x0000000072608000-memory.dmp
    Filesize

    44KB

  • memory/2756-117-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/2944-111-0x0000000000090000-0x00000000000D2000-memory.dmp
    Filesize

    264KB

  • memory/2944-106-0x0000000000090000-0x00000000000D2000-memory.dmp
    Filesize

    264KB

  • memory/2944-107-0x0000000000090000-0x00000000000D2000-memory.dmp
    Filesize

    264KB

  • memory/2944-114-0x0000000000090000-0x00000000000D2000-memory.dmp
    Filesize

    264KB